Each day a different image or photograph is featured, with an
accompanying caption, which deals with various topics in Earth Science.

Hraunfossar Falls in Iceland

The photo above shows the stunning Hraunfossar, a series of waterfalls in western Iceland, cascading into the Hvítá, "Borgarfjörðu" River. These falls span more than half a mile (0.8 km) and are in essence springs formed by streams channeling out from the Hallmundarhraun lava field, which flowed from a volcanic eruption beneath the Langjökull ice cap. The presence of glacial flour (also called rock powder) suspended in the water is the cause of the turquoise coloration of the river. Photo taken in June 2010.